FlatPM < 3.1.05 - Authenticated (Contributor+) Stored Cross-Site Scripting

Description The FlatPM plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to 3.1.05 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.